you cannot do both encrypted and unencrypted traffic on the same port, you have to pick which you use. If you try to do a health check to that port, you will either get an error like you are describing, or you will need to do the check via TLS.

depending on how you have rsyslog configured, it may or may not require a client cert.

David Lang


On Thu, 6 Jul 2023, Andrew Cowan via rsyslog wrote:

Hi,

I am getting the below error messages on my rsyslog server.

verify error:num=20:unable to get local issuer certificate

verify error:num=21:unable to verify the first certificate

TLS connection doesn't appear to be working from client -> rsyslog server on 
6514.

Looks like a TLS handshake issue, and maybe unable to establish an encrypted 
channel.

Questions.


 1.  Is there anyway to disable to test. Can send on unencrypted UDP/TCP ok 
between client/server.


 1.  Does the client need a cert. My understanding is it only needs the CA cert?

Any help appreciated.

Thanks,
Andrew
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